Function test_rotated_arcs

lib/matplotlib/tests/test_patches.py:766–799

()

@image_comparison(["all_quadrants_arcs.svg"], style="mpl20")
def test_rotated_arcs():
    fig, ax_arr = plt.subplots(2, 2, squeeze=False, figsize=(10, 10))

    scale = 10_000_000
    diag_centers = ((-1, -1), (-1, 1), (1, 1), (1, -1))
    on_axis_centers = ((0, 1), (1, 0), (0, -1), (-1, 0))
    skews = ((2, 2), (2, 1/10), (2,  1/100), (2, 1/1000))

    for ax, (sx, sy) in zip(ax_arr.ravel(), skews):
        k = 0
        for prescale, centers in zip((1 - .0001, (1 - .0001) / np.sqrt(2)),
                                      (on_axis_centers, diag_centers)):
            for j, (x_sign, y_sign) in enumerate(centers, start=k):
                a = Arc(
                    (x_sign * scale * prescale,
                     y_sign * scale * prescale),
                    scale * sx,
                    scale * sy,
                    lw=4,
                    color=f"C{j}",
                    zorder=1 + j,
                    angle=np.rad2deg(np.arctan2(y_sign, x_sign)) % 360,
                    label=f'big {j}',
                    gid=f'big {j}'
                )
                ax.add_patch(a)

            k = j+1
        ax.set_xlim(-scale / 4000, scale / 4000)
        ax.set_ylim(-scale / 4000, scale / 4000)
        ax.axhline(0, color="k")
        ax.axvline(0, color="k")
        ax.set_axis_off()
        ax.set_aspect("equal")


def test_fancyarrow_shape_error():